摘要:
Various embodiments disclosed relate to aziridinated triglycerides and polymers formed therefrom. In various embodiments, the present invention provides an aziridinated triglyceride having the structure described herein. In various embodiments, the present invention provides a method of making the aziridinated triglyceride, a method of crosslinking the aziridinated triglyceride to form a polymer, the polymer formed from the aziridinated triglyceride, a triglyceride with at least one pendent unsaturated group that can be used to form the aziridinated triglyceride, and a method of making the triglyceride having at least one pendent unsaturated group.
摘要:
Provided is a polymer product having a branched chain made of polyester, and a weight average molecular weight of 200,000 or greater when measured by gel permeation chromatography.
摘要:
A continuous preparation method of a biodegradable aliphatic/aromatic polyester copolymer includes: performing a first esterification reaction of an aliphatic dihydroxy compound with an aliphatic dicarboxylic acid at a temperature of 185° C. or less; continuously performing a second esterification reaction of a reaction product from the first esterification reaction; continuously performing a first polycondensation reaction of a reaction product from the second esterification reaction to obtain a prepolymer; continuously performing a second polycondensation reaction of the prepolymer to obtain a second polycondensation reaction product having an intrinsic viscosity from about 0.9 dl/g to about 1.0 dl/g; and continuously performing a third polycondensation reaction of the second polycondensation reaction product to prepare the biodegradable aliphatic/aromatic polyester copolymer, wherein the performing of the first esterification reaction or the continuously performing of the second esterification reaction includes adding an aromatic carboxylic acid. The biodegradable aliphatic/aromatic polyester copolymer prepared by control of the intrinsic viscosity of the second polycondensation reaction product may be improved in processibility, film formability, tensile/tearing strength, and blending ability with another polymer resin. Use of a less amount of the aliphatic dihydroxy compound as a starting material may reduce manufacturing costs.
摘要:
The disclosure describes a one reactor process for making a bio-based polyester resin and the polyester polymer thereof The bio-based polymer is the product of a condensation reaction of (a) a rosin diol, (b) neopentyl glycol, (c) succinic acid, (d) an aromatic dicarboxylic acid and (e) dipropylene glycol or tripropvlene glycol, wherein the rosin diol is a reaction product between a rosin acid and a cyclic alkylene glycol and comprises only one rosin moiety. The resultant polyester resin retains thermal properties as compared to a similar resin but made using previous multi-step processes conducted in separate vessels.
摘要:
A method for producing a polymer, including: (i) continuously supplying and bringing at least a first monomer, which is ring-opening polymerizable, and a compressive fluid into contact with each other, to thereby allow the first monomer to carry out ring-opening polymerization to continuously generate an intermediate; and (ii) bringing the intermediate and a second monomer, which is identical to or different from the first monomer in kind, into contact with each other, to thereby allow the intermediate and the second monomer to carry out polymerization.
摘要:
A continuous solid-state polymerization device according to the present invention comprises: a feeder for injecting a prepolymer continuously; a transverse reactor connected to the feeder via a first connector to receive the prepolymer from the feeder and to perform solid-state polymerization, the reactor itself rotating; and a chamber connected to the transverse reactor via a second connector to receive a polymer, which has been discharged from the transverse reactor, and solid-state polymerization of which has been completed, and to discharge the polymer, wherein the transverse reactor has a demolding coating film formed on the inner wall thereof, and the feeder, the transverse reactor and the chamber are in a vacuum state. The continuous solid-state polymerization device can prevent formation of an interval, in which the prepolymer stagnates, and can perform solid-state polymerization continuously in a vacuum state without using inert gas.
摘要:
To provide a polylactic acid composition, containing: polylactic acid, wherein the polylactic acid composition contains a ring-opening polymerizable monomer residue in a concentration of 100 ppm by mass to 5,000 ppm by mass, and wherein the polylactic acid composition has a weight average molecular weight of 100,000 or more but less than 300,000 as measured by gel permeation chromatography, a yellow index (YI) value of 5 or less, and a Charpy impact strength of 10 kJ/m2 or more.
摘要翻译:为了提供含有聚乳酸的聚乳酸组合物,其中所述聚乳酸组合物含有浓度为100质量ppm〜5000质量ppm的开环聚合性单体残基,其中,所述聚乳酸组合物的重均分子量 黄色指数(YI)值为5以下,夏比冲击强度为10kJ / m 2以上,通过凝胶渗透色谱法测定的重量为100,000以上且小于300,000。
摘要:
The present invention provides a method for producing a polyester resin comprising dicarboxylic acid units and diol units, wherein at least a portion of the diol units is a diol unit having a cyclic acetal skeleton, the method comprising specific steps (1) to (4-2).
摘要:
There is provided a method of preparation for a biodegradable co-polyester, the method including: forming an oligomer through a primary esterification reaction between a hydroxy group of an aliphatic dihydroxy compound and a carboxylic group of an aliphatic dicarboxylic acid compound; performing a secondary esterification reaction between the formed oligomer and an aromatic dicarboxylic acid compound; and performing a polycondensation reaction in a vacuum, in which sequentially divided addition of the aromatic dicarboxylic acid compound is performed and the weight ratio of the aromatic dicarboxylic acid compound with respect to the oligomer for each time of the sequentially divided addition is from 2:8 to 5:5. The method efficiently increases a solubility of aromatic dicarboxylic acid, thereby increasing a reaction rate and reducing a side reaction.
摘要:
The preparation of cyclohexadienes from one or more plant oils is disclosed. The cyclohexadiene can be used to form polymers or derivatized to form other monomers that can be used to form polymeric materials.